- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 53°17'6"N 4°39'35"W
- Eastings/Northings: 222791, 379766
- OS Grid: SH227797
- Mapcode Local: GBR GNW0.L91
- Mapcode Global: WH31B.DP9C
Location and coordinates are for the approximate centre of Porthyrhwydau within this administrative area.
Geographic features and populated places may cross administrative borders.